CreateQuery mem4 (children 3)
 Identifier mem4
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration k1 (children 1)
    DataType UInt64
   ColumnDeclaration k2 (children 1)
    DataType UInt64
   ColumnDeclaration v (children 1)
    DataType String
 Storage definition (children 1)
  Function Join (children 1)
   ExpressionList (children 4)
    Identifier ALL
    Identifier FULL
    Identifier k1
    Identifier k2
